: EVAP code P 0442

08-08-14, 05:09 PM
Hi guys, can you tell me how to clear this P0442 code? I screwed tight the gas cap and want to see if that was the problem.

Thanks! Bruce

08-08-14, 08:30 PM
Start checking the EVAP system for vacuum leaks.

Please update your profile to show your year and model.


08-08-14, 08:44 PM
Bruce, You hijacked a 9 year old dead thread. Please update your profile to show correct information and tine zone. I activated your CF account. Welcome to the Funny Farm !!!

Trace out the lines in the EVAP system - any cracked connector or elbow will set EVAP codes. The primary vacuum line, engine compartment, green test cap, runs back to the charcoal canister under the driver's side rear seat frame rail. Also, check the fuel fill pipe for rust perforation. Not uncommon, particularly in the rust belt.

IF - IF - you have corrected the problem the code will self-clear after three succesful engine start-run cycles during which the fault does not reappear. Otherwise, clear the code using the car's built-in code diagnostic system.